HEART

० Heart is a muscular organ, which carries the flow of blood to all parts of the body by the rhythmic contraction covered in all vertebrate organisms.

❣In Human body Heart has four Chambers

❣Sound of Heart - lub & dub

❣normal heart rate - 70 to 72 beats per minute

❣Systole - period of contraction of the heart muscles

❣Disystole - period of relaxation of the heart muscles

❣Electrocardiogram(ECG) is a test that measures the electrical activity of the heartbeat

❣Electrocardiography is the process of producing an electrocardiogram

❣Electrocardiography (ECG) invented by - Willem Einthove

❣Blood pressure (BP) measurement instrument - Sphygmomanometer

❣sphygmomanometer invented by Samuel Siegfried Karl Ritter von Basch

❣Normal BP - 120/80mmHg

❣High BP - 150/100mmHg

❣Low BP - 100/50mmHg